Schwinn bike serial number list

Serial numbers are found in various places on a bike. By far the most common is beneath the bottom bracket, so the lowest part of the frame. Other possibilities include rear stays, on the seat tube near the crankset, or on the head tube. The serial number isn't prominent on the bike for aesthetic reasons. A random series of digits doesn't ...

Schwinn bike serial number list. Schwinn 29inch TAFF Model: S5732WM Date: XD50430BA Serial: SNXDS21014955 Shifter securing bolt to handle bar is striped. 8 Speed shifter works perfectly. CL. las vegas > for sale by owner > bicycles. post ... model name / number: Taff -- S5732WM. serial number: ...

How to Identify Bike by Serial Number. You can visit bikeindex.org or bikeregister.com to search for your bike serial number (also called bike frame number). …

Each bike has a unique serial number, and it serves as its unique ID. Serial numbers on bikes typically range in length from 7 to 10 characters, but it can also be longer or shorter. These digits are the key …The Schwinn serial look up tool is for the mass production bikes made in Chicago until the factory closed in 1983. There were some Japanese built Schwinn branded 10 speed bikes with serials that could start with SD but would only have numbers after the first 2 letters (Le Tour, Super Le Tour, Passage, etc).The quest to find the serial number on a Schwinn bike leads to several common locations. Initially, check the underside of the bike’s bottom bracket. This spot is a haven for serial numbers, offering a clear view once the bike is flipped over. For older Schwinn models, the head tube or the rear dropout might be the serial number’s sanctuary ...The Schwinn bike serial number H19577 was made in 1951. What year is Schwinn Hollywood model serial? Db11944. What year is Schwinn serial number MM530008? 2003.ON NEWER BIKES: you can find a 4 digit serial number lightly stamped onto the headbadge. The first three digits are the numerical day of the year. The Schwinn Web site had a Collectors' Page with info on dating, serial numbers, etc.Apr 2, 2024 · Key Takeaways. The serial number is usually stamped on the bottom of the frame, near the pedals, and can be used to identify and date a Schwinn bicycle. The style of the bike can also be used to date it, as certain frame shapes, components, and paint jobs were popular during specific time periods.

The Schwinn Panther is loaded with deluxe features and swell equipment! Colors Black and Red or Two-tone red, Blue, or Green. Model D-27 26-inch; Just check the outstanding combination of features on this bicycle! Famous Schwinn spring fork, Rocket Ray headlight, super-streamlined Schwinn Frame, and new tan Koro-seal-top saddle with chrome springs.Photo Credited by Trek bikes. In the image above, the letter “C” represents the bike’s production year. Riders can decode this letter on Vintage Trek under the “MID 90s 3-PART SERIAL NUMBERS” section. Another popular bike manufacturer that does this is Schwinn.Look for the serial number on the lower head tube (right above the wheel on the front of the bike) for Schwinns produced between 1970 and 1979. Those produced after these dates will usually have a serial number stamped on the bottom bracket shell (the rear axle hanger holding the wheel in place). Identify Schwinns produced before 1948 by ...Schwinn Traveler - $399 (Oak Park) ‹ image 1 of 12 › bicycle type: cruiser. frame size: 19" wheel size: 26 in. bicycle frame material: steel. suspension: none (rigid) brake type: caliper. handlebar type: cruiser.For sale by owner: Like new Bike Schwinn AL Mountain bike Aluminum Lightweight Tubing 21 speeds Shimano 27.5 in. wheels Schwinn 27.5 in. frame Super clean No problems, no issues, no scratches, good...Find spare or replacement parts for your bike: Schwinn 230. View parts list and exploded diagrams for Entire Unit. ... Category: Stationary Bicycles - Recumbent Bikes - Residential Model Name: 230 230 Recumbent. Exploded Diagrams. Entire Unit. Matches All Selected Attributes ... Catalog Number. Part Name. Special Notes 13006154. Pedal Set. $20. ...

The Schwinn serial numbers that date the bike to the fall of 1954 or 1956, but I believe the Serial numbers for 54 and the 56 were located on the Left Rear Dropout - not located on the bottom bracket of the pedal crank housing. ... None of the numbers on the BB match the Schwinn serial number formats of the 1950s. With all the numbers stamped on the BB …Looking up an HP laptop model number based on a serial number is easy to do using an online tool provided by HP. If you have access only to a list of serial numbers for your compan...The date codes data is generally stamped on the drive side dropout. Serial number foramt Gmmyy where, G = Giant. mm = month where 01 = Jan, 02 = Feb, etc. yy = year where 80 = 1980, 81 = 1981, etc. Example: G0384 is a frame that was manufactured by Giant in March 1984. * The serial number format changed in 1987.All Schwinn serial numbers before August 17, 1948 were lost in an office fire. Serial numbers were under the bottom hanger bracket until 1952 when they were moved to the left rear dropout. They were moved again in 1972 to the head tube. Several different numbering systems were used and sometimes the same numbers were reused in …

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Bicycles (except children's bicycles) are almost always required to have a frame or serial number. Some manufacturers use a date-code as part of the serial number. For example, a Brompton uses YYMMXXX as their serial code, so a Brompton with a serial number of 1306 123456 was manufactured in 2013.06 or June 2013.bikes catalogs parts history serialnumbers#. The Schwinn Autocycle. This page provides year by year images and info quoted from Schwinn catalogs for the Autocycle from 1938 to 1952. 1938. The New Auto-Cycle De Luxe. Model B706 - 16 inch. Model B707 - 18 inch. Model B708 - 20 inch. The rear stays are brought forward in a graceful sweeping are to ...Supposedly repainted in a 1980's Porsche color called "Winesap." The iconic Schwinn Paramount and its cousin, the 1981-83 Schwinn Superior, are detailed in this registry archive covering Paramount bicycles dating from 1959 though 1984. Includes serial numbers, owner and restoration history, and present componentry.I have an old Schwinn chrome-moly from late 60s early70s. There are two sets of numbers under crank, not sure which is serial number. Included head badge because I believe t to be a clue in bikes history. Bike was not painted, but chrome plated.View attachment 934869 View attachment 934870 View attachment 934871

bikes catalogs parts history serial numbers # The Schwinn Racer. ... a Top Buy Quality Bike. 1971 Schwinn Racer. The best choice for economy and performance. Schwinn diamond design frame, Schwinn tubular rims, Schwinn 26" x 1 3/8" nylon touring tires, two-tone foam cushion saddle (hand brakes on 3-speed model), 17" frame camelback style for ...Schwinn X-tra Lite Bicycle, 1979 Specifications. Super Le Tour II. Frame Size (inches) :D21-9-21" men'sD23-9-23" men'sD25-9-25" men's. Frame: Schwinn-Built X-tra Lite Torch brazed lug frame, 16 gauge 1020 carbon steel. Fork: Tubular, with semi-sloping chrome plated fork crown and 6" chrome on fork sides.Schwinn serial #Vintage schwinn bicycle serial numbers Bike serial number: where to find it & what it means!Where is the model number, date code or serial number of my bike. Schwinn bicycle serial number databaseChicago schwinn serial number Chicago schwinn serial numberSchwinn bike frame size chart.1. Check the Serial Number. The obvious starting point to find the date a bike was made is the serial number. Serial numbers are stamped onto the bike during the manufacturing process. They are a useful tool in helping recover bikes after theft and also to establish the model. The good news is most bikes have them.If you search for 1234, you will only find bikes with serial numbers of 1234 and serials close to that - not a bike with serial number of 12345689. Okay, fine, so maybe there are a few bikes without serial numbers, but this is rare and typical only on hand made bikes or really old bicycles.1982 Schwinn Catalog. Original text and images of the 1982 Schwinn sales brochure. The text below, including the prices, are as written in 1982. The Schwinn System is the most complete line of bicycles and accessories in the world, available only at your Independent Authorized Schwinn Dealer. The Schwinn System will give you all the bicycle you ...The Schwinn Sprint. This page provides year by year images and info quoted from Schwinn catalogs for the Sprint from 1974 to 1988. 1974. A new, but tested, concept in lightweight bicycle design... proven by computerized standards established at the Calspan testing laboratory. Special frame design provides a completely deifferent "Fun Feel" to ...To find your serial number, check below the bottom bracket on the e-bike crank arm. Make sure you document the key serial number as well in case you ever need a replacement. 3. Assemble your e-bike and charge the battery. Following the manual, put together the handlebars, e-bike disc brakes, seat, and pedals.Look up a Case IH serial number at PartStore.CaseIH.com. This website allows you to find a model by the serial number and then displays exploded diagrams for the model’s assemblies...Go to Old Roads classic and antique bicycles and look up "Schwinn serial numbers". Looked to me to be early 50's. K456312 is too many numbers to be a 64'. Oh would you look at that! I overlooked that detail. It looks like a middleweight frame though and has the serial on the dropout.

Photo Credited by Trek bikes. In the image above, the letter “C” represents the bike’s production year. Riders can decode this letter on Vintage Trek under the “MID 90s 3-PART SERIAL NUMBERS” section. Another popular bike manufacturer that does this is Schwinn.

Available 21", 23" and 25" frame sizes (53.3cm through 63.5cm). Schwinn designed diamond style of Reynolds 531 double butted top and bottom tubes, single-butted seat mast. Reynolds 531 tapered forks and stays. Fork crown and 6" of front and rear forks chrome plated.The Schwinn Sprint. This page provides year by year images and info quoted from Schwinn catalogs for the Sprint from 1974 to 1988. 1974. A new, but tested, concept in lightweight bicycle design... proven by computerized standards established at the Calspan testing laboratory. Special frame design provides a completely deifferent "Fun Feel" to ...Sequence Number: This two digit number represents the nth frame and/or fork scheduled during the month. During the peak of the bike boom, Schwinn would add another digit, sometimes producing as many as 500 frames a month. For example, H7634 is the thirty-fourth frame or fork scheduled during August of 1976. Self-Describing Serial NumbersThe Schwinn Spitfire. This page provides year by year images and info quoted from Schwinn catalogs for the Spitfire from 1951 to 1979. 1951. Quality construction at a money-saving price! Model D-24 26-inch. Model D-74 26-inch. A Sturdy, dependable Schwinn bike that will give years of pleasure. This unequipped Schwinn Spitfire is the ideal ...The Schwinn® Airdyne® AD8 Bike combines the latest in air resistance technology with unmatched durability and performance bringing your HIIT workouts or total body cardio workouts to a new level. ... The model number for countries with a 110V electrical outlet is the Schwinn Airdyne AD7. 100475. Product Features.The Schwinn bike serial number H19577 was made in 1951. What year is Schwinn Hollywood model serial? Db11944. What year is Schwinn serial number MM530008? 2003.Aug 6, 2020 · The Flying Merkel Bicycle: An Evolving Study; Category: Serial Numbers. Serial Numbers. August 6, 2020. Schwinn Serial Numbers 1948-1951 ... Serial numbers under the ...

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Look for the serial number on the lower head tube (right above the wheel on the front of the bike) for Schwinns produced between 1970 and 1979. Those produced after these dates will usually have a serial number stamped on the bottom bracket shell (the rear axle hanger holding the wheel in place). Identify Schwinns produced before 1948 by ...F18-3 26 inch 3-Speed (Schwinn-Approved) 59. F18-2 26 inch 2-Speed Coaster (Bendix) 59. F18-1 26 inch Coaster (Mark IV) 59. See the complete history of the Schwinn Jaguar. Schwinn Panther II. Trim, sleek and fast- with that “Schwinn Quality” look! Panther II newest Schwinn of them all! Superb new styling.The Schwinn Bicycle Co. is an American bicycle company and a bicycling history icon. From 1948 to 1982, Schwinn pioneered its own models of cruisers, touring bikes and three-speeds, fabricating their own frames and components in-house. ... This tool searches a database of Schwinn serial numbers and if it finds a match to your serial number then ...On bikes older than 1948 you need to use reference to other, known year bikes, or pull out the crank to look for a date stamp on it. Doing both is a good idea. All serial number records before 8/18/1948 were lost in a factory fire. ----- IF THE SERIAL NUMBERS ARE FOUND UNDER BOTTOM BRACKET (On The Bottom Of The Frame, Under The Pedal …The two bikes used for the experiment were the 1979 and 1980 "Super LeTour" and the "LeTour". The 1980 road bike line-up from Schwinn was headed by the:-Paramount - Made in USA-Voyageuer 11.8 - Imported from Asia $333 List DB 4130 Cro-Mo main frame 25.5 pounds-Super LeTour - Made in Chicago $290 List 1020 Carbon steel frame 26.5 pounds-LeTour ...From Schwinn Bulletin 23, "Schwinn Bicycle Identification Numbers": Bicycles from Japan have a production month letter in either the first or second position and a production year number in the other (first or second) position. Examples J6 77123 = September, 1976, 6J 77123 = September, 1976. Thus E4 23917 = May, 1974.The serial number location on the frame also matters, although in this particular case it is in the same location as 1941. To get good information, post good pictures of the bike. At the bare minimum, a full chain-side picture of the whole bike, a picture of the serial number, a picture of the steering tube also showing the badge …The fender braces on the 1937 BA97 are shown in the catalog cut above as flat but it's hard to see in my picture. I looked past the down tube because of the sweetheart sprocket and the rear fender braces which are on the OP's bike. The serial number is basically useless, BUT it fits 1937 in one of the pre war serial number tables.Serial number dating. We explain the nuances of determining the age of a Paramount by its serial number. Provenance Services. We report on our extensive collection of records from 1962 to 1979. Schwinn/Paramount Catalog Scans. Thanks to the dedicated work of T.R. Findley and friends, we present a collection of catalog scans from the late 1890 ...The Schwinn Hollywood. This page provides year by year images and info quoted from Schwinn catalogs for the Hollywood from 1938 to 1982. 1938. This fully equipped model met with such enthusiastic approval last year that we are continuing it this year with several improvement. It is the finest ladies bicycle produced in America.I believe the original source for the Schwinn serial number information listed in the OP is here: Schwinn Date Codes From there it links to these pages: ID FACTS 1948 through 1952 1952 through 1969 1970 through 1982 Note on the original pages where it states "Copy and print this info at will, it`s FREE. ….

100mm front suspension. Schwinn has a phenomenal offer for beginner mountain bikers and casual riders who love the comfort and practicality of MTBs. Mesa 3 is a great example. This is an entry-level Schwinn mountain bike that costs $450 and features an aluminum frame, front suspension, and 26″ or 27.5″ wheels. Submit a request. Congrats on your new bike! Register it here. Make sure to have your bike's serial number handy. Need help finding it? Click here. Schwinn Mini Scrambler. A design pacer among the younger sportly set is the new for-1975 mini version of the rugged MX Scrambler. Built-to-take-it forged fork with stylish black mat finish, Scrambler style braced handlebars, Schwinn MX style saddle, sturdy one-piece crank, and 16" x 1 3/4" Gripper Slik rear tire.8. It's a Schwinn Twinn. The serial number will be located on one of the rear dropouts, if it's not on either side of the head tube. There are a couple websites that will help you determine the date of manufacture. Judging from the type of tires fitted to the rim, and the shape of the rim, I surmise that the bike has had both wheels replaced at ...To perform a lookup of a bike serial number, you need to go to one of the websites mentioned above and enter the bike’s serial number. The bike index site will provide you search field that you can input the bike serial number into. Then all you have to do next is hit search, and the index will provide you with a list of matches.Redshift Sports increases rider saftey by sticking bike lights inside pedals to help draw attention to the cyclist as they are pedaling about. If I were to make a list of things th...Little is known about serial numbers for bikes built after World War II. Unfortunately, an office fire in 1948 destroyed the Paramount records. Numbers mostly followed a three-digit format – often but not necessarily with a “P” as the prefix. ... The second phase started in Mid-1970 when Schwinn started using the standard numbering system (and probably a …View and Download Schwinn 230 Recumbent Bike 2013 model assembly manual online. Assembly and Owner's Manual. 230 Recumbent Bike 2013 model exercise bike pdf manual download. Also for: 230 / journey 2.0, 230 journey 2.0. Schwinn bike serial number list, I have taken all the schwinn serial numbers from several databases and made a tool that automatically searches for it. This means you can enter a vintage (1948 …, Vintage 1967 Schwinn 20" Typhoon children's bicycle. This is a very cute little bike. Serial number begins with KC which from the research I've done makes it a 1967 model. I would describe this bike as a good rider. It's in solid condition and rides well. Original paint is showing scratches and general wear. Chrome is very presentable., bikes catalogs parts history serial numbers # The Schwinn Racer. ... a Top Buy Quality Bike. 1971 Schwinn Racer. The best choice for economy and performance. Schwinn diamond design frame, Schwinn tubular rims, Schwinn 26" x 1 3/8" nylon touring tires, two-tone foam cushion saddle (hand brakes on 3-speed model), 17" frame camelback style for ..., Enjoy the extra get-up-and-go of the new Schwinn designed GT-120 5-speed rear derailleur 5-speed gears, so easy to shift. Sturdy carbon steel frame, handbrakes, foam cushioned saddle, built-in kickstand, chrome fenders, and 26" x 1 3/8" gumwall tires. Smartly trimmed with chrome to make it a fashion leader., 1964 Schwinn Bike Frame Bicycle Steel. -. $24. (Ewing) If you are reading this, Yes, it is still available. Local Pickup Only. 1964 Schwinn Frame-Women’s. Serial Number: B236475. from bikehistory.org this is an original Chicago Schwinn Serial number stamped on: 04/22 of 1964. Awesome styling; Great Schwinn Logo., 1972 Schwinn Varsity Mens Bicycle, Serial No# FH029095, Chicago Built Mens Bike, Vintage Schwinn Bicycle, Bike Repair, Bike Parts, Bike Art TheOldGrainery 5 out of 5 stars. ... Our number is 217-779-3992. Be prepared with the title. Our address is: The Grainery 6411 Ehrhardt Rd Payson, IL 62360, Below is a list of prewar Schwinn serial numbers. The numbers were obtained from original bicycles that could be identified by components. Obviously there are gaps between years. If you have an identifyable Schwinn and can help close the gap, please email us. ... Wanted: Bikes, Trikes, Parts, Accessories, Etc. Replies 0 Views 78. Monday at 8:35 ..., Re: Redline serial numbers? Thanks Jennifer, The museum is where I got most of my info, but the serial number list there is vague. I know it's a RL 20b (with rear kick bridge), but not a lot of info on serial ID. There is also no representation in '92 catalog. The serial numbers someone put on there suggest it could be '92, but I'm not sure? jd., I'm going to presume this is tween piece, somewhere between 1934 and 1935. It doesn't have the 6 digits and it doesn't have a preceding letter. Schwinn may have started out their new serials in 1935 with just 5 digits and soon after dropped that number 1 and replaced it with a letter and 4 numbers. Hopefully someone can verify or dispute this ..., Vintage Schwinn bike for sale. Big Chrom mag 27 in . Rare bike as the serial number is from 1957 yet the bike is a 1984 model. ... Description: Brand: Schwinn Model: World Sport Serial Number: G0285 Frame Size: 23" Speed: 12 Tires: 27" Stand Over Height: 33" Color: Blue Location: Naperville. IL- PICK UP MUST BE WITHIN 5 DAYS OF AUCTION END ..., Bikes from the later 1950s may have a serial number near the part of the frame where the rear axle attaches. 1960s - For vintage Schwinn bikes from the 1960s, look for a serial number on the rear fork end of the frame itself or the part where the axle attaches for the rear wheel. 1970s - Many vintage Schwinn bicycles from the 1970s have the ..., E. Emma of manua.ls December 25, 2023. To determine if your Schwinn Sidewinder Mountain bike is in the first gear, follow these steps: Find the rear shifter on the right side of the handlebar. It will have an indicator that reads either "low to high" or a series of numbers from 1 and up. The lowest gear is indicated as "1"., 5. Schwinn closed the Chicago plant in 1983 shortly after opening a plant in Greenville MS. They were also importing many bikes at that time. Your '85 Traveler was built in Greenville MS. The headbadge still read "Chicago" because Schwinn's corporate offices remained there. The serial number SC5xxxxx indicates the frame was built in March (C ..., You can usually find the bike serial number on the under side of the bottom bracket. The "bottom bracket" is the part of the frame that the pedals go into. So all you have to do is turn your bike upside down and have a look…. The bike serial number is usually on the underside of the bottom bracket. If it's not there, don't worry!, From Schwinn Bulletin 23, "Schwinn Bicycle Identification Numbers": Bicycles from Japan have a production month letter in either the first or second position and a production year number in the other (first or second) position. Examples J6 77123 = September, 1976, 6J 77123 = September, 1976. Thus E4 23917 = May, 1974., That serial number is consistent with a Schwinn frame produced in Chicago in November 1978. The numbers on the headbadge refer to the 58th day of 1979, which presumably was when the full bike was assembled, so it was probably a 1979 model., This site provides historical information about vintage Schwinn bicycles. ... Schwinn History | Resources | Serial numbers | About. I ♥ Schwinn, but this website is not affiliated with Schwinn. Vintage Schwinn literature and documentation from the year of 1949. skip to main content. bikes catalogs parts history serial numbers # 1949 Schwinn …, For questions regarding order cancellations, returns and product troubleshooting, please give us a call at (800) 605-3369 (See Customer Care hours below)., Power up your adventure and turn your everyday ride into something extraordinary with an electric bike. With pedal assist and throttle, you can go farther, faster, and have more fun doing it. Don’t sweat the hills – just charge it up, get on, and go. Shop E-Bikes. Range:Up to 45 Miles., The model number and date code can be found on a small silver sticker by the non-chain side crank arm, above the pedals on the frame of the bike. The serial number is engraved into the metal frame of the bike, on the bottom, underneath the crank. 967 out of 1686 found this helpful. Submit a request. The model number and date code can be found ..., Schwinn Bike parts to get your Bike running like new. 5-Star customer service and guaranteed low prices. ... To make your search even easier, use the "Find My Equipment" tool to select model and serial number, to get an exact match for your repair project., 1964 Schwinn Stingray Model J38. In the middle of 1963 Schwinn introduced the Stingray which was an instant hit. Based on a fad that was happening in Southern California Schwinn capitalized on the modifications kids were making to their bikes using 'banana' seats and high rise bars. This model J38 is in fairly rough, but original, condition., Uber's subscription-based service, which locks in lower rates, is now available in 20 new cities. And Uber's added free scooter and e-bike rides, to boot. Update: Some offers menti..., Talk him down to $1200 and make sure it has both boxes to go with it. 1995 Reproduction Phantoms are very special bikes. 5000 of them were made, 4,500 Black and 250 each of the Red and Green They come with a Certificate of Authenticity and are numbered with the bike frame. Serial numbers run from G000001 to G005000., The serial number location on the frame also matters, although in this particular case it is in the same location as 1941. To get good information, post good pictures of the bike. At the bare minimum, a full chain-side picture of the whole bike, a picture of the serial number, a picture of the steering tube also showing the badge when present ..., The numbers also crossed between the bottom bracket and some dropout numbers. When you come across this situation you need to correctly date the bike using all the parts, paint etc. Schwinn Serial numbers do not tell you when a bike was made. The mechanically stamped numbers were stamped on the BB, dropout or head tube prior to any frame building., Classic Stingrays. Locate the bike's serial number. It will be on the head tube, the A-frame or the seat tube. Wipe dirt and oil from the serial number, if necessary, so you can read it accurately. Write it down. Call a Schwinn representative and tell her the serial number. She will be able to tell you the year the bike was made., Schwinn Serial Numbers 1970-1982 Print, copy, or post anywhere you like. ... Serial #'s are now on the lower left of the headtube, by the Schinn badge on fromt of the frame ... For newer bikes: there's a 4 digit serial number lightly stamped onto the headbadge. The first three digits are the numerical day of the year,, To find out if a Schwinn bike is vintage, you can check the bike’s serial number, look at its design and parts, and know a bit about Schwinn’s history. Vintage Schwinn bikes have serial numbers in places like under the bike or on the frame, which tell when the bike was made. The design, like the shape of the frame and the type of …, EF32709 Headtube number.. EF015984 Looks like Schwinn stamped serial numbers on at least 32700 dropout components before they started stamping the numbers on the headtubes. I would assume the 0 indicates that the previous dropout numbers were reused but have the additional 0 preceding the numbers. If that is true, there were 15983 serial ..., Vintage Schwinn Bike Years: Age: How to Identify? Serial Numbers: Average Price: 1820 – 1920: 103 – 203 years: Simple road and racing bikes with single-speed drives, coaster brakes, steel frames & saddles: N.A: $100 – 1200: 1920 – 1930: 93 – 103 years: Sturdy steel frames, Balloon tires, Stick shifters & High-rise handlebars : …, The 1952 serial numbers were stamped on the left rear dropout. I missed that key point about the serial location. Home. Forums. New posts Search forums. ... My Schwinn built BF Goodrich bike has a serial number # B22947 on the bottom bracket. My bike has the straight out rear drop outs. Reactions: AS-1. Kpoole 'Lil Knee Scuffer. Mar 18, 2024, If Schwinn had continued build their own frames using this system, AZ would have been January 1988. With base of 10 we know the numbers. With a base of 24 letters the year 1989 is AA. Even though no bikes have this serial number, June of 1989 - FAA. Counting up 1998 is AK. Your bike frame was built in August 1998. Month/year.